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Objective To study the clinical features,diagnosis and treatment of eosinophilic granuloma of bone(EGB).Methods Twelve cases(8 male and 4 female)of EGB and their medical record,imaging examinations,follow-up data were reviewed,and the lesion sites,symptom and clinical features were analyzed with reference to relative literature.Results Nine unifocal cases were found in the cervical spine(3 cases),the thoracic spine(1 case),the lumber spine(1 case),the femur(1 case),the metacarpal bones(1 case),and the ilium(2 cases).Three multifocal cases were found in the thoracic and lumber spine(1 case),in the femur,the multiple ribs,the skull,the scapula(1 case)and in the skull,the femur,the ilium(1 case).The most common presenting symptom was pain at the lesion site and restricted motion was obviously in the cervical lesion.The case of the thoracic lesions was found neurologic deficit.Osteolytic destruction was found in the radiologic examination in EGB and the periosteal reaction was found in the long bone lesions,and vertebra plana was considered as typical cha-racteristics in the spine lesion.The lesions not in the spine were diagnosed by biopsy,exclusive methods and close following-up were performed in the spine lesions.Two unifocal were healed spontaneously and three were performed with curettage with one bone grafting.Multifocal and the lesions in the spine underwent chemotherapy.All cases were followed up and no recurrence was found.Conclusions EGB is commonly solitary and not seldom in the spine.Topical pain may be chief complaint.Osteolytic image was found in the radiologic examination.Biopsy and exclusive methods combining closely follow-up were used for diagnosis.EGB is self-limited observation,so curettage or chemotherapy can be used in treatment,and prognosis is good.
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In this study, we provided a comprehensive methodology for designing and integrating miniature system in the biosensor application. In general, the network analyzer is commonly used for acoustic wave sensor measurement. However, it is remarkably inconvenient for portable use. Therefore, we presented a readout concept, which was focused on the miniaturization of the flexural plate wave (FPW) sensor system by integrating phase detection circuit. The miniature system includes a Wien-Bridge oscillator, a voltage following, a FPW device, a phase-locked loop, a phase detector, a MCU, and a LCM display. This work succeeded in integrating all the subsystems. And the core technology of the system is the phase detection function. The results showed the phase shift resolution is 10 mV/1°.
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The sensitivity of the humidity sensor based on hybrid thin films of nanostructure TiO